SPF and PA?

Summer is here! And although that means it’s extremely hot for me. It also means getting a tan for many. So I was thought this might be useful information as I myself was a bit blur about it…

What is the difference between SPF and PA?

Well the SPF number helps you figure out how long you can be in the sun before burning, which is caused by UVB rays. So if you usually burn after 10minutes and you have an SPF25 sunscreen, you can stay in the sun 25 times longer without burning which is 250minutes.

PA is the Japanese unit of measurement for UVA protection. The PA rating is usually followed by “+” signs – so the more pluses, the higher level of UVA protection.